28478100

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:286

約数の個数: 144

約数和(自身を含む): 95993856

約数和(自身を除く): 67515756

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 71, 75, 84, 100, 105, 140, 142, 150, 175, 191, 210, 213, 284, 300, 350, 355, 382, 420, 426, 497, 525, 573, 700, 710, 764, 852, 955, 994, 1050, 1065, 1146, 1337, 1420, 1491, 1775, 1910, 1988, 2100, 2130, 2292, 2485, 2674, 2865, 2982, 3550, 3820, 4011, 4260, 4775, 4970, 5325, 5348, 5730, 5964, 6685, 7100, 7455, 8022, 9550, 9940, 10650, 11460, 12425, 13370, 13561, 14325, 14910, 16044, 19100, 20055, 21300, 24850, 26740, 27122, 28650, 29820, 33425, 37275, 40110, 40683, 49700, 54244, 57300, 66850, 67805, 74550, 80220, 81366, 94927, 100275, 133700, 135610, 149100, 162732, 189854, 200550, 203415, 271220, 284781, 339025, 379708, 401100, 406830, 474635, 569562, 678050, 813660, 949270, 1017075, 1139124, 1356100, 1423905, 1898540, 2034150, 2373175, 2847810, 4068300, 4746350, 5695620, 7119525, 9492700, 14239050, 28478100]

約数ペア:

[(1, 28478100), (2, 14239050), (3, 9492700), (4, 7119525), (5, 5695620), (6, 4746350), (7, 4068300), (10, 2847810), (12, 2373175), (14, 2034150), (15, 1898540), (20, 1423905), (21, 1356100), (25, 1139124), (28, 1017075), (30, 949270), (35, 813660), (42, 678050), (50, 569562), (60, 474635), (70, 406830), (71, 401100), (75, 379708), (84, 339025), (100, 284781), (105, 271220), (140, 203415), (142, 200550), (150, 189854), (175, 162732), (191, 149100), (210, 135610), (213, 133700), (284, 100275), (300, 94927), (350, 81366), (355, 80220), (382, 74550), (420, 67805), (426, 66850), (497, 57300), (525, 54244), (573, 49700), (700, 40683), (710, 40110), (764, 37275), (852, 33425), (955, 29820), (994, 28650), (1050, 27122), (1065, 26740), (1146, 24850), (1337, 21300), (1420, 20055), (1491, 19100), (1775, 16044), (1910, 14910), (1988, 14325), (2100, 13561), (2130, 13370), (2292, 12425), (2485, 11460), (2674, 10650), (2865, 9940), (2982, 9550), (3550, 8022), (3820, 7455), (4011, 7100), (4260, 6685), (4775, 5964), (4970, 5730), (5325, 5348)]